QQuickPopupPrivate: unbreak ubsan build

The tst_drawer test uses members of the class, but it was not (autotest-)
exported. That's no problem as long as the function called is inline, or
a data member is accessed, but in a UBSan build, the typeid of a poly-
morphic class is checked on each access, so the typeinfo object must be
exported.

Fix by autotest-exporting the class and defining the dtor out-of-line to
pin the typeinfo and vtabe to a single TU.

Change-Id: I1524e63a330dbdb0ae1ceb60263b589734bfd3aa
Reviewed-by: J-P Nurmi <jpnurmi@qt.io>

1 files changed, 4 insertions, 0 deletions

diff --git a/src/quicktemplates2/qquickpopup.cpp b/src/quicktemplates2/qquickpopup.cpp
index 6a1e1c4f..124b8c5b 100644
--- a/src/quicktemplates2/qquickpopup.cpp
+++ b/src/quicktemplates2/qquickpopup.cpp
@@ -165,6 +165,10 @@ QQuickPopupPrivate::QQuickPopupPrivate()
 {
 }
 
+QQuickPopupPrivate::~QQuickPopupPrivate()
+{
+}
+
 void QQuickPopupPrivate::init()
 {
     Q_Q(QQuickPopup);